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If an object of mass 9 kg has a velocity of 7 m/s, what is its linear momentum?
A) 63 kg-m/s
B) 1.3 kg-m/s
C) 0.78 kg-m/s
D) 16 kg-m/s
E) cannot be determined
Which alcohol is used in rubbing alcohol?
A) 2-Hydroxypropane
B) Ethylene glycol
C) Ethanol
D) Methanol
Air circulation around a cyclone in the Northern Hemisphere as viewed from above is
A) counterclockwise.
B) the same as in the Southern Hemisphere.
C) toward the center of the low-pressure area.
D) along isobars.
Fossilized tree resin is known as
A) coal.
B) amber.
C) opal.
D) stromatolite.
How many atoms are in 1.00 mol of Mg?
A) 24.3
B) 6.02 x 1023
C) 24.3 x 6.02 x 1023
D) 24.3 x 1023
How much heat is necessary to change 30 g of water at 40°C into steam at 100°C?
A) 0.18 kcal
B) 1.8 kcal
C) 18 kcal
D) 2.04 kcal
Addition of an electron to an atom leaves a
A) neutron.
B) positive ion.
C) free quark.
D) negative ion.
An imaginary line from one geographic pole to the other along the surface of Earth
perpendicular to the equator, and that passes through Greenwich, England, is called
A) a longitude.
B) a meridian.
C) the International Date Line.
D) a parallel.
E) the prime meridian.
It is generally easier to push an object once it is moving than when you are getting it
started. This is because
A) sliding friction is zero.
B) sliding friction is less than static friction.
C) static friction is less than sliding friction.
D) static friction is zero.
An element that tends to gain electrons during chemical reactions is probably
A) a semimetal.
B) a nonmetal.
C) an actinide.
D) a metal.
When the equation NH4NO3N2O + H2O is balanced, the coefficient of N2O
is
A) 3.
B) 4.
C) 2.
D) 1.
With only two exceptions, if a nucleus contains fewer ______________ than
______________, it is unstable.
A) protons; neutrons
B) neutrons; protons
C) protons; alpha particles
D) protons; beta particles
The Jovian planets
A) are composed mainly of hydrogen and helium.
B) have no solid surface.
C) have rings.
D) all of these.
The ratio of the speed of light in a vacuum to the speed of light in a medium is known
as the index of
A) reflection.
B) refraction.
C) diffraction.
D) none of these.
The largest planet in the solar system is
A) Jupiter.
B) Neptune.
C) Uranus.
D) Saturn.
E) Mars.
The brightest planet has an apparent magnitude of about " 4 and is named
A) Jupiter.
B) Saturn.
C) Mars.
D) Venus.
A meteorologist getting ready for a weather report notes that the wet bulb of a
psychrometer has a reading of 60F when the air temperature is 70F. What would be the
resulting reports for (a) the relative humidity and (b) the dew point temperature?
The intensity of a 70-dB whistle is quintupled. What is the new decibel level?
A) 70 dB
B) 55 dB
C) 82 dB
D) 350 dB
Which of the following is not a unit of work?
A) ft lb
B) N m
C) joule
D) watt
The lithosphere consists of
A) all of the crust's depth.
B) all of the crust's depth and part of the mantle's depth.
C) part of the crust's depth.
D) all of the crust's depth and all of the mantle's depth.
What type of glacier is formed when a valley floor is covered with compressed glacial
ice?
A) Continental glacier
B) Stream glacier
C) Valley glacier
D) Cirque glacier
What is the molecular formula for benzene?
A) C6H6
B) C6H12
C) C6H14
D) C6H8
E) None of these
In the reaction 2Al + 3F22AlF3, the aluminum
A) is reduced.
B) gains electrons.
C) is oxidized.
D) is the catalyst.
The identity of an atom is determined by its number of
A) valence bonds.
B) neutrons.
C) electrons.
D) protons.
A circular hole is drilled into an aluminum sheet. When the sheet is heated, the diameter
of the hole will
A) become smaller.
B) become larger.
C) depend on the thickness of the sheet.
D) not be affected.
In 1661, who developed a definition of element that made the concept subject to
laboratory investigation?
A) Berzelius
B) Boyle
C) Lavoisier
D) Davy
In 1869, a major event in the history of chemistry occurred; it was the
A) discovery of the law of definite proportions.
B) discovery of the octet rule.
C) discovery of the law of conservation of mass.
D) development of the periodic table.
A Doppler red shift indicates
A) a shift toward higher frequencies.
B) a shift toward longer wavelengths.
C) that a light source is approaching relative to the observer.
D) none of these.
The half-life of 20F is 11 s. What fraction of a sample of 20F will remain after 44 s have
elapsed?
A) 1/4
B) 1/16
C) 1/8
D) None of these
The study of planet Earth is known as
A) mineralogy.
B) petrology.
C) geology.
D) paleontology.
A volcano with a high, steep slope is a
A) composite volcano.
B) stratovolcano.
C) shield volcano.
D) cinder cone.
A solar eclipse occurs at or near the time of a
A) first-quarter moon.
B) last-quarter moon.
C) new moon.
D) full moon.
The local solar time at 75W is 12:00 noon. What is the longitude of an observer who
sees the full moon on her meridian at this time?
A) 105E
B) 75E
C) 15E
D) 15W
E) None of the above
What two quantities are constant in uniform circular motion? ______________ and
______________
A(n) ______________ fault occurs as the result of compressional forces.
A(n) ______________ ridge system stretches through the major oceans of the world.
The letters LMC refer to the galaxy named _______________.
Particles of sand, mud, and rock fragments deposited along rivers, in lakes, and on the
seafloors are called by the general term _____________.
Primordial lead contains the isotope lead-______________, whereas radiogenic lead
does not.
Carbonic acid is the main agent of ______________ weathering.
State the number of protons, electrons, and neutrons in an atom of .
Material that is transported and deposited by ice is called ______________.
An earthquake of magnitude ______________ on the Richter scale is the smallest that
can be felt by humans.
A particular material has an index of refraction of 1.25. What percent of the speed of
light in a vacuum is the speed of light in the material?
The law of conservation of angular momentum states that the angular momentum of an
object remains constant if there are no external ______________ torques acting.
Seamounts with flat tops are known as ______________.
The Phanerozoic eon and the Paleozoic era began about ______________ million years
ago.
Only the energy of a nucleus, and not its identity, is changed when it undergoes
______________ decay.
One plate slides horizontally past another plate at the type of plate boundary called
______________.
The number of electrons in an atom of is ______________.
